Table 3.

Multivariable logistic regression and Cox proportional hazards regression models for breast cancer incidence and mortality risk, among incident breast cancer cases diagnosed in New Jersey, by molecular subtype and by age at diagnosis and race/ethnicity, 2008–2013.

	Luminal Aa	Luminal Bb	Non-luminal HER2- expressingc	Triple-negatived
Incidence	OR (95% CI)	OR (95% CI)	OR (95% CI)	OR (95% CI)
Age at diagnosis (years)
20–39	0.62 (0.56–0.68)	1.56 (1.35–1.80)	1.22 (0.10–1.50)	1.77 (1.54–2.02)
40–49	0.95 (0.89–1.02)	1.10 (1.00–1.21)	0.87 (0.76–1.01)	1.10 (1.00–1.20)
50–64	1.00 (ref)	1.00 (ref)	1.00 (ref)	1.00 (ref)
≥65	1.22 (1.16–1.29)	0.67 (0.61–0.73)	0.61 (0.54–0.69)	0.84 (0.77–0.92)
Race/ethnicity
NHW	1.00 (ref)	1.00 (ref)	1.00 (ref)	1.00 (ref)
NHB	0.59 (0.55–0.63)	0.93 (0.82–1.05)	1.31 (1.12–1.53)	2.15 (1.95–2.36)
API	0.78 (0.71–0.86)	1.24 (1.06–1.44)	1.55 (1.27–1.90)	0.94 (0.80–1.11)
Hispanic	0.76 (0.70–0.82)	1.05 (0.92–1.19)	1.20 (1.00–1.44)	1.19 (1.05–1.35)
Mortality	HR (95% CI)	HR (95% CI)	HR (95% CI)	HR (95% CI)
Age at diagnosis (years)
20–39	0.96 (0.74–1.25)	0.81 (0.50–1.30)	1.10 (0.66–1.84)	0.99 (0.74–1.34)
40–49	0.80 (0.68–0.95)	0.65 (0.43–0.97)	0.75 (0.49–1.17)	1.03 (0.82–1.30)
50–64	1.00 (ref)	1.00 (ref)	1.00 (ref)	1.00 (ref)
≥65	1.51 (1.33–1.71)	1.69 (1.28–2.24)	2.21 (1.62–3.01)	1.25 (1.03–1.53)
Race/ethnicity
NHW	1.00 (ref)	1.00 (ref)	1.00 (ref)	1.00 (ref)
NHB	1.64 (1.41–1.91)	1.54 (1.10–2.15)	1.34 (0.95–1.91)	1.28 (1.05–1.56)
API	1.00 (0.76–1.31)	0.59 (0.28–1.25)	0.99 (0.56–1.74)	1.00 (0.69–1.46)
Hispanic	0.94 (0.75–1.17)	1.06 (0.68–1.64)	0.81 (0.47–1.39)	1.14 (0.86–1.52)

NOTE: Risk estimates and 95% confidence intervals (CI) were generated using logistic regression for incidence and Cox proportional hazards regression for breast cancer specific mortality; adjusted for age, race/ethnicity and stage at diagnosis. Bolded values represent statistical significance.

^aLuminal A (ER+ and/or PR+/HER2-);

^bLuminal B (ER+ and/or PR+/HER2+);

^cNon-luminal HER2-expressing (ER-/PR-/HER2+);

^dTriple negative (ER-/PR-/HER2-)